Walter typically painted in oil on rudimentary materials, with a marked immediacy and naivety. The first man of color to manage an Antiguan sugar plantation, Walter spent the last decades of his life in an isolated rustic home in Antigua, surrounded by his writings, paintings, and carvings.

Coinciding with Antigua and Barbuda's inaugural National Pavilion at Venice Biennale 2017, The Last Universal Man is the first comprehensive monograph of this important Caribbean artist. Defying categorization as an outsider or self-taught artist, Walter worked as a writer, composer, sculptor, and painter.